# Service

Hoverfly Cloud services simulates real HTTP services such as web APIs and SOAP services. You can think of Hoverfly Cloud services as API simulations, over the wire test doubles, or more highly configurable HTTP stubs and mocks.

Hoverfly Cloud uses our Open Source tool, [Hoverfly](https://github.com/SpectoLabs/hoverfly) to simulate a service. Hoverfly Cloud uses Kubernetes to run and manage multiple copies of Hoverfly, and adds a powerful GUI with many additional capabilities.

The Service in Hoverfly Cloud refers to a running instance of Hoverfly with a loaded Simulation file. The Simulation file represents the configuration for the Service, how it will match incoming HTTP requests, and how it will respond when it makes a match.

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